How To Fix /ISDFPS/MM483 - NSN group/class &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/MM -

• Message number: 483

• Message text: NSN group/class &1 already exists

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/MM483 - NSN group/class &1 already exists ?

  The SAP error message /ISDFPS/MM483 NSN group/class &1 already exists typically occurs in the context of the SAP ISDFPS (Integrated Supply Chain Defense Forces and Security Program) module, particularly when dealing with National Stock Numbers (NSNs) or material classifications.
  Cause:
  This error indicates that you are trying to create or modify a National Stock Number (NSN) group or class that already exists in the system. The system enforces uniqueness for NSN groups/classes, and attempting to create a duplicate entry triggers this error.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing NSN Groups/Classes:
  
  Use transaction codes like MM03 (Display Material) or MM02 (Change Material) to check if the NSN group/class you are trying to create already exists.
  You can also use transaction SE16N to query the relevant database tables (e.g., MARA, MARC, or specific tables related to NSN groups) to see if the entry is already present.
  
  
  
  Modify or Use Existing Entry:
  
  If the NSN group/class already exists, consider modifying the existing entry instead of creating a new one.
  If you need to make changes, use the appropriate transaction (like MM02) to update the existing NSN group/class.
  
  
  
  Consult Documentation:
  
  Review any relevant documentation or guidelines provided by your organization regarding the creation and management of NSN groups/classes to ensure compliance with internal processes.
  
  
  
  Contact Support:
  
  If you are unsure about the existing entries or how to proceed, consider reaching out to your SAP support team or a functional consultant who specializes in the ISDFPS module for assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material).
  Tables: Understand the relevant tables that store NSN group/class information, such as MARA (General Material Data) and MARC (Plant Data for Material).
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.